/**
 * Created with IntelliJ IDEA.
 * Description:
 * User: Gao zhao xu
 * Date: 2023-10-26
 * Time: 22:07
 */
public class test1 {
    public static void main(String[] args) {
        System.out.println(5 / 2);
        System.out.println(5 / 2.0);
        System.out.println(Math.ceil(5 / 2.0));
    }
}
